10 Questions
What does a mass spectrum plot?
Intensity as a function of the mass-to-charge ratio
How are ions separated in mass spectrometry?
According to their mass-to-charge ratio
What is the purpose of ionizing the sample in mass spectrometry?
To create positively charged fragments or ions
In a mass spectrometry procedure, what causes some of the sample's molecules to become positively charged?
Bombardment with a beam of electrons
What can a mass spectrum be used to determine?
Elemental or isotopic signature of a sample
What does a mass spectrum plot?
Intensity as a function of the mass-to-charge ratio
How are ions separated in a typical mass spectrometry procedure?
According to their mass-to-charge ratio
What is ionized in a typical mass spectrometry procedure?
The sample
What does mass spectrometry determine from a sample?
Elemental or isotopic signature, masses of particles and molecules, and chemical identity or structure
How are mass spectrometry results presented?
As a mass spectrum, a plot of intensity as a function of the mass-to-charge ratio
Study Notes
Mass Spectrometry
- A mass spectrum plot displays the distribution of ions by their mass-to-charge ratio, providing information on the molecular weight and structure of the sample.
Ion Separation and Ionization
- In mass spectrometry, ions are separated based on their mass-to-charge ratio, typically using a magnetic field or electric field.
- The purpose of ionizing the sample is to create charged particles (ions) that can be separated and detected by the mass spectrometer.
- Ionization is typically achieved by bombarding the sample with high-energy electrons or photons, causing some of the sample's molecules to become positively charged.
Mass Spectrum Analysis
- A mass spectrum can be used to determine the molecular weight, structure, and identity of the sample.
- Mass spectrometry determines the molecular weight and structure of a sample by separating and detecting ions based on their mass-to-charge ratio.
Presentation of Results
- Mass spectrometry results are typically presented as a mass spectrum, which is a plot of the distribution of ions by their mass-to-charge ratio.
Test your knowledge of mass spectrometry with this quiz! Explore the mass-to-charge ratio of ions and learn about mass spectra. This quiz covers the application of mass spectrometry in various fields and its use with pure samples and complex mixtures.
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